Prairie voles are among the most lovingly monogamous creatures on our planet. Like the rest of the animals on this list, prairie voles mate for life, and they really mean it. Monogamy is more than just a social practicality for these little fuzzies. A prairie vole couple doesn’t just mate together, but they also spend their free time together, build homes together, groom each other — they don’t even look at other potential mates. Males even protect their partners with a sense of chivalry that would make a 13th-century knight blush in shame. And after the stork comes, both male and female prairie voles are devoted parents to their offspring. They’re truly the Ozzies and Harriets of the animal kingdom. (Environmental Graffiti)